import sys

X = int(input())
# 例外処理
if X < 400 or X >= 2000:
    print("error") 
    sys.exit()

# 級の境界値とXを比較
for score, kyu in zip(reversed(range(400, 2000, 200)), range(1, 9)):
    if X >= score:
        print(kyu)
        break import sys sys X = int(input()) X int(input()) int input() input if X < 400 or X >= 2000:
    print("error") 
    sys.exit()

# 級の境界値とXを比較 X < 400 or X >= 2000 X < 400 X 400 X >= 2000 X 2000 print("error") print "error" sys.exit() sys.exit sys exit for score, kyu in zip(reversed(range(400, 2000, 200)), range(1, 9)):
    if X >= score:
        print(kyu)
        break score kyu zip(reversed(range(400, 2000, 200)), range(1, 9)) zip reversed(range(400, 2000, 200)) reversed range(400, 2000, 200) range 400 2000 200 range(1, 9) range 1 9 if X >= score:
        print(kyu)
        break X >= score X score print(kyu) print kyu break X = int(input()) int(input()) X
import sys

X = int(input())
# 例外処理
if X < 400 or X >= 2000:
    print("error") 
    sys.exit()

# 級の境界値とXを比較
for score, kyu in zip(reversed(range(400, 2000, 200)), range(1, 9)):
    if X >= score:
        print(kyu)
        break